I MUCH prefer the DD AIO (side-aplix or side-snapping version) for my daughter. She is also long and lean and in general I get much better fit from a side-snapping dipe (especially) because I can customize the fit around the legs and the waist separately.
With the VB AIOs, to get it tight enough around the legs it was always too tight around the waist.
Plus, the DD AIO pattern INCLUDES separate pattern pieces for side-closure and front-closure. The directions are easy to follow and the pictures are GREAT. I also like the DD pocket fitted, and the DD boutique bibs patterns.
The DD pattern is less expensive, and you do not have to pay any shipping for it. Also, Amber has it listed in her hyenacart for less than she has it listed on her main web site.
Also, you don't have to wait on the pattern to arrive in the mail... Amber emails it to you within 24 hours of payment.